<!DOCTYPE html>
<link rel="help" href="https://www.w3.org/TR/css-break-3/#monolithic">
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div style="columns:2; column-fill:auto; gap:0; width:100px; height:200px;">
  <div style="width:50px; height:100px; background:green;"></div>
  <div>
    <div style="contain:size; break-before:column; height:100px; width:50px; background:green;"></div>
  </div>
</div>
